How many flights depart from Region of Ontario to Chicago on average per day?

105 flights are operational daily from Region of Ontario to Chicago as of September 2026. The most popular departure time for this route is 1:00p.m., with 45% of flights per day taking off in the afternoon.

How many flights depart from Region of Ontario to Chicago on average per week?

739 flights are operational weekly from Region of Ontario to Chicago as of September 2026. The most popular departure day for this route is Sun, with 17% of flights per week taking off on this day.

Which airlines fly to Chicago?

Air Canada, United Airlines and Porter Airlines are the top three most popular airlines that fly to Chicago from Region of Ontario according to our data. Air Canada is the first choice among our users, with 59% of people opting to fly with this airline when travelling to Chicago. Keep in mind that there are 5 different airlines that fly to Chicago on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Ontario to Chicago?

Porter Airlines, Air Canada, and United Airlines are the most popular carriers operating from Ontario to Chicago

How long does it take to fly to Chicago?

Flight times from Region of Ontario to Chicago vary, but if you’re flying out of Ottawa and flying into Chicago O'Hare Intl Airport (one of the most popular routes), then the duration is 2h 19m on average. Another popular route from Region of Ontario to Chicago is flying from Hamilton to Chicago O'Hare Intl Airport, which will take roughly 8h 15m. Keep in mind that layovers or delays could extend your travel time.

When did momondo last update prices for flights from Ontario to Chicago?

Prices for flights from Ontario to Chicago were last updated today.

How many operators does momondo search for flights from Ontario to Chicago?

There are 5 operators available for flights from Ontario to Chicago as of September 2026.

How old do you have to be to fly from Ontario to Chicago?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario to Chicago.

What documentation or ID do you need to fly to Chicago?

The required travel and health documents for your Chicago trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Chicago. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

C$ 180 Cheap Flights from Ontario to Chicago in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Chicago

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:35 a.m. - 11:40 a.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

2h 05mdirect

6:20 p.m. - 9:06 p.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 46mdirect

C$ 287Porter Airlines

Wed, 4 Nov - Wed, 11 Nov

12:15 p.m. - 1:25 p.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

2h 10mdirect

2:00 p.m. - 4:48 p.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 48mdirect

C$ 288Air Canada

Sat, 3 Oct - Sun, 4 Oct

4:35 p.m. - 5:40 p.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

2h 05mdirect

6:20 p.m. - 9:06 p.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 46mdirect

C$ 288Porter Airlines

Thu, 3 Dec - Thu, 10 Dec

7:00 a.m. - 8:00 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 00mdirect

7:09 a.m. - 9:54 a.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 45mdirect

C$ 289Lufthansa

Thu, 8 Oct - Sun, 11 Oct

8:20 a.m. - 3:00 p.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

7h 40m2 stops Ottawa Montreal Pierre Elliott Trudeau Intl

1:55 p.m. - 4:42 p.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 47mdirect

C$ 289Air Canada

Mon, 2 Nov - Mon, 9 Nov

11:00 a.m. - 12:00 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 00mdirect

8:50 a.m. - 11:49 a.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 59mdirect

C$ 294Lufthansa

Thu, 8 Oct - Sun, 11 Oct

11:36 a.m. - 1:01 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 25mdirect

6:59 a.m. - 1:01 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

5h 02m1 stop New York LaGuardia

C$ 298American Airlines

Fri, 4 Dec - Sun, 6 Dec

4:15 p.m. - 10:30 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

7h 15m1 stop Philadelphia

8:00 a.m. - 10:50 a.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 50mdirect

C$ 298American Airlines

Sat, 31 Oct - Sun, 1 Nov

7:00 p.m. - 11:21 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

5h 21m1 stop Newark

7:09 a.m. - 9:54 a.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 45mdirect

C$ 298United Airlines

Sat, 3 Oct - Sun, 4 Oct

8:50 a.m. - 9:48 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

1h 58mdirect

5:00 a.m. - 11:43 a.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

5h 43m1 stop Newark

C$ 298United Airlines

Sun, 4 Oct - Wed, 7 Oct

Cheap last-minute flights

Enter your travel dates to find the best prices.

10:10 a.m. - 11:00 a.m.YTZ Toronto Island-MDW Chicago Midway

1h 50mdirect

3:20 p.m. - 6:00 p.m.MDW Chicago Midway-YTZ Toronto Island

1h 40mdirect

C$ 443Porter Airlines

Sat, 26 Sep - Fri, 2 Oct

1:45 p.m. - 2:35 p.m.YTZ Toronto Island-MDW Chicago Midway

1h 50mdirect

3:20 p.m. - 6:00 p.m.MDW Chicago Midway-YTZ Toronto Island

1h 40mdirect

C$ 453Porter Airlines

Sat, 26 Sep - Tue, 6 Oct

9:00 p.m. - 10:05 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 05mdirect

9:20 p.m. - 11:59 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 39mdirect

C$ 487United Airlines

Wed, 23 Sep - Sun, 18 Oct

1:00 p.m. - 2:05 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 05mdirect

5:53 p.m. - 8:44 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 51mdirect

C$ 487United Airlines

Sat, 26 Sep - Sun, 11 Oct

5:15 p.m. - 6:18 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 03mdirect

8:40 p.m. - 11:26 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 46mdirect

C$ 487Multiple Airlines

Wed, 23 Sep - Sun, 18 Oct

10:15 a.m. - 11:21 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 06mdirect

2:15 p.m. - 5:01 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 46mdirect

C$ 487Multiple Airlines

Tue, 22 Sep - Thu, 15 Oct

10:45 a.m. - 2:52 p.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

5h 07m1 stop Montreal Pierre Elliott Trudeau Intl

2:00 p.m. - 4:48 p.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 48mdirect

C$ 488Air Canada

Sat, 26 Sep - Tue, 6 Oct

10:45 a.m. - 2:52 p.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

5h 07m1 stop Montreal Pierre Elliott Trudeau Intl

7:25 a.m. - 10:13 a.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 48mdirect

C$ 488Air Canada

Sat, 26 Sep - Fri, 2 Oct

11:53 a.m. - 4:00 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

5h 07m1 stop Charlotte Douglas

4:00 p.m. - 11:46 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

6h 46m1 stop Philadelphia

C$ 524American Airlines

Sat, 26 Sep - Fri, 2 Oct

3:13 p.m. - 4:18 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 05mdirect

1:45 p.m. - 9:37 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

6h 52m1 stop New York LaGuardia

C$ 587American Airlines

Wed, 23 Sep - Fri, 5 Mar

Cheap direct flights

Enter your travel dates to find the best prices.

10:35 a.m. - 11:40 a.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

2h 05mdirect

6:20 p.m. - 9:06 p.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 46mdirect

C$ 287Porter Airlines

Wed, 4 Nov - Wed, 11 Nov

10:10 a.m. - 11:00 a.m.YTZ Toronto Island-MDW Chicago Midway

1h 50mdirect

11:45 a.m. - 2:25 p.m.MDW Chicago Midway-YTZ Toronto Island

1h 40mdirect

C$ 288Porter Airlines

Sun, 11 Oct - Fri, 16 Oct

12:15 p.m. - 1:25 p.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

2h 10mdirect

2:00 p.m. - 4:48 p.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 48mdirect

C$ 288Air Canada

Sat, 3 Oct - Sun, 4 Oct

7:00 a.m. - 8:00 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 00mdirect

7:09 a.m. - 9:54 a.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 45mdirect

C$ 289Lufthansa

Thu, 8 Oct - Sun, 11 Oct

12:15 p.m. - 1:25 p.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

2h 10mdirect

2:00 p.m. - 4:48 p.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 48mdirect

C$ 291Air Canada

Thu, 1 Oct - Sun, 4 Oct

11:00 a.m. - 12:00 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 00mdirect

8:50 a.m. - 11:49 a.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 59mdirect

C$ 294Lufthansa

Thu, 8 Oct - Sun, 11 Oct

7:09 a.m. - 8:39 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 30mdirect

9:42 a.m. - 12:32 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 50mdirect

C$ 323American Airlines

Mon, 7 Dec - Sun, 13 Dec

7:29 a.m. - 8:39 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 10mdirect

2:50 p.m. - 5:41 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 51mdirect

C$ 323American Airlines

Thu, 29 Oct - Mon, 2 Nov

3:35 p.m. - 4:44 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 09mdirect

7:02 a.m. - 9:47 a.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 45mdirect

C$ 323United Airlines

Wed, 2 Dec - Sun, 6 Dec

8:35 a.m. - 9:44 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 09mdirect

9:21 p.m. - 11:59 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 38mdirect

C$ 323United Airlines

Sat, 28 Nov - Mon, 7 Dec

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Porter Airlines flights from Region of Ontario to Chicago

Our best Porter Airlines deals on Region of Ontario to Chicago flight tickets

Porter Airlines

4 Nov

YTZ10:35 a.m.Toronto Island

2h 05m

ORD11:40 a.m.Chicago O'Hare Intl

11 Nov

ORD6:20 p.m.Chicago O'Hare Intl

1h 46m

YTZ9:06 p.m.Toronto Island

C$ 287

Porter Airlines

11 Oct

YTZ10:10 a.m.Toronto Island

1h 50m

MDW11:00 a.m.Chicago Midway

16 Oct

MDW11:45 a.m.Chicago Midway

1h 40m

YTZ2:25 p.m.Toronto Island

C$ 288

Porter Airlines

2 Oct

YTZ1:45 p.m.Toronto Island

1h 50m

MDW2:35 p.m.Chicago Midway

4 Oct

MDW11:45 a.m.Chicago Midway

1h 40m

YTZ2:25 p.m.Toronto Island

C$ 289

Air Canada flights from Region of Ontario to Chicago

Our best Air Canada deals on Region of Ontario to Chicago flight tickets

Air Canada

3 Oct

YTZ12:15 p.m.Toronto Island

2h 10m

ORD1:25 p.m.Chicago O'Hare Intl

4 Oct

ORD2:00 p.m.Chicago O'Hare Intl

1h 48m

YTZ4:48 p.m.Toronto Island

C$ 288

Air Canada

2 Nov

YTZ8:20 a.m.Toronto Island

7h 40m

2 stops

ORD3:00 p.m.Chicago O'Hare Intl

9 Nov

ORD1:55 p.m.Chicago O'Hare Intl

1h 47m

YTZ4:42 p.m.Toronto Island

C$ 289

Air Canada

2 Oct

YYZ4:00 p.m.Toronto Pearson Intl

5h 12m

1 stop

ORD8:12 p.m.Chicago O'Hare Intl

4 Oct

ORD8:40 p.m.Chicago O'Hare Intl

1h 46m

YYZ11:26 p.m.Toronto Pearson Intl

C$ 291

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoChicago

YTZ Toronto Island - ORD Chicago O'Hare Intl

YTZORD

Toronto Island

Wed 4/11

10:35 a.m.-11:40 a.m.

Nonstop2h 05m

Chicago O'Hare Intl

Wed 11/11

6:20 p.m.-9:06 p.m.

Nonstop1h 46m

C$ 287

TorontoChicago

YTZ Toronto Island - ORD Chicago O'Hare Intl

YTZORD

Toronto Island

Sat 3/10

12:15 p.m.-1:25 p.m.

Nonstop2h 10m

Chicago O'Hare Intl

Sun 4/10

2:00 p.m.-4:48 p.m.

Nonstop1h 48m

C$ 288

TorontoChicago

YTZ Toronto Island - ORD Chicago O'Hare Intl

YTZORD

Toronto Island

Thu 3/12

4:35 p.m.-5:40 p.m.

Nonstop2h 05m

Chicago O'Hare Intl

Thu 10/12

6:20 p.m.-9:06 p.m.

Nonstop1h 46m

C$ 288

Quickest round-trip

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Thu 8/10

7:00 a.m.-8:00 a.m.

Nonstop2h 00m

Chicago O'Hare Intl

Sun 11/10

7:09 a.m.-9:54 a.m.

Nonstop1h 45m

C$ 289

TorontoChicago

YTZ Toronto Island - ORD Chicago O'Hare Intl

YTZORD

Toronto Island

Mon 2/11

8:20 a.m.-3:00 p.m.

2 stops7h 40m

Chicago O'Hare Intl

Mon 9/11

1:55 p.m.-4:42 p.m.

Nonstop1h 47m

C$ 289

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Thu 8/10

11:00 a.m.-12:00 p.m.

Nonstop2h 00m

Chicago O'Hare Intl

Sun 11/10

8:50 a.m.-11:49 a.m.

Nonstop1h 59m

C$ 294

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Fri 4/12

11:36 a.m.-1:01 p.m.

Nonstop2h 25m

Chicago O'Hare Intl

Sun 6/12

6:59 a.m.-1:01 p.m.

1 stop5h 02m

C$ 298

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Sat 31/10

4:15 p.m.-10:30 p.m.

1 stop7h 15m

Chicago O'Hare Intl

Sun 1/11

8:00 a.m.-10:50 a.m.

Nonstop1h 50m

C$ 298

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Sat 3/10

7:00 p.m.-11:21 p.m.

1 stop5h 21m

Chicago O'Hare Intl

Sun 4/10

7:09 a.m.-9:54 a.m.

Nonstop1h 45m

C$ 298

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Sun 4/10

8:50 a.m.-9:48 a.m.

Nonstop1h 58m

Chicago O'Hare Intl

Wed 7/10

5:00 a.m.-11:43 a.m.

1 stop5h 43m

C$ 298

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Region of Ontario to Chicago

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Chicago?

The month of February is another great option to travel to Chicago, with average flight prices from Region of Ontario averaging around C$ 379.

What is the cheapest day to depart on your flight to Chicago?

The cheapest day to depart on your flight to Chicago is on a Friday when prices can be found for as low as C$ 632. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around C$ 928. These prices are subject to change though, so be sure to set up a Price Alert for flights to Chicago.

What is the cheapest time of day to depart on your flight to Chicago?

In the evening is the cheapest time of day to fly from Region of Ontario to Chicago when you can find flight prices for as low as C$ 696. Flying to Chicago in the evening is an ideal time because this is during off-peak travel hours. In the afternoon is when there is more demand to fly to Chicago, so prices are often more expensive at around C$ 1,088 per ticket.

What is the cheapest Ontario to Chicago flight route?

Fly from Toronto Island to Chicago Midway for the best Ontario - Chicago flight prices

How far in advance should I book a flight from Ontario to Chicago?

You are more likely to see cheaper flights to Chicago from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around C$ 437 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from Region of Ontario for as low as C$ 316 on momondo.

What cabin class options are available on Region of Ontario to Chicago flights?

There are 4 cabin classes available to choose from on Region of Ontario to Chicago flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Region of Ontario to Chicago flights?

No. A direct flight is the cheapest option for a flight between Region of Ontario to Chicago.

Cheap Region of Ontario to Chicago flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Chicago

Best price found	C$ 180
Fastest flight time	1h 50m
Direct flights	Every day
Airports in Chicago	3 airports

The best one-way flight to Chicago from Region of Ontario in the past 72 hours is C$ 180. The best round-trip flight deal from Region of Ontario to Chicago found on momondo in the last 72 hours is C$ 287.

The fastest flight from Region of Ontario to Chicago takes 1h 50m

Direct flights go from Region of Ontario to Chicago every day.

There are 3 airports in Chicago. From Region of Ontario there are direct flights to Chicago Midway (MDW).

Search flight deals

Frequently asked questions about flying from Ontario to Chicago

When did momondo last update prices for flights from Ontario to Chicago?
Prices for flights from Ontario to Chicago were last updated today.
How many operators does momondo search for flights from Ontario to Chicago?
There are 5 operators available for flights from Ontario to Chicago as of September 2026.
How old do you have to be to fly from Ontario to Chicago?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario to Chicago.
What documentation or ID do you need to fly to Chicago?
The required travel and health documents for your Chicago trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Chicago. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Region of Ontario to Chicago?
Based on momondo bookings for flights between Region of Ontario and Chicago, the leading plane model is De Havilland (Bombardier) DHC-8-400 Dash 8Q, making up 24.71% of the total bookings. Other popular models include Embraer 175 (Enhanced Winglets) with 10.59%, Boeing 737-900 with 9.62%, and Embraer 195 E2 with 7.28%.

Best airlines flying from Region of Ontario to Chicago

Compare and see reviews for airlines that fly from Region of Ontario to Chicago with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom C$ 135	Free Cancellation	Rating 7.1 11,658 reviews	Search Air Canada flights
Porter Airlines	PriceFrom C$ 222	Free Cancellation	Rating 8.0 462 reviews	Search Porter Airlines flights
American Airlines	PriceFrom C$ 263	Free Cancellation	Rating 7.0 12,071 reviews	Search American Airlines flights
United Airlines	PriceFrom C$ 297	Free Cancellation	Rating 7.4 10,220 reviews	Search United Airlines flights
WestJet	PriceFrom C$ 355	Free Cancellation	Rating 7.2 3,446 reviews	Search WestJet flights

Merrillville

Benton Harbor

Hammond

Munster

Valparaiso

Portage

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Chicago?

Finding the right flight to Chicago from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognizable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Chicago quick and easy, saving you time and money.

Can I find flights from Ontario to Chicago with flexible booking policies on momondo?

Flights from Ontario to Chicago with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Ontario to Chicago?

Once all potential Ontario to Chicago flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to Chicago right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Chicago, momondo offers a useful price alert feature which will track prices for flights to Chicago from Ontario and alert you when they change.

An easier way to manage your Chicago trip

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Fly into one of these airports located in Chicago

Chicago Midway Airport

Chicago O'Hare Intl Airport

Cheap flights from Ontario to Chicago from C$ 180

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Chicago departing on 5/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Ontario to Chicago

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Cheap last-minute flights

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Filter for what you want

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Porter Airlines flights from Region of Ontario to Chicago

Our best Porter Airlines deals on Region of Ontario to Chicago flight tickets

Air Canada flights from Region of Ontario to Chicago

Our best Air Canada deals on Region of Ontario to Chicago flight tickets

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Use the filters below to find and compare flights from Ontario to Chicago that are best for you.

See travel insights to Chicago from

How to get the cheapest flight ticket from Region of Ontario to Chicago

What is the cheapest month to fly to Chicago?

What is the cheapest day to depart on your flight to Chicago?

What is the cheapest time of day to depart on your flight to Chicago?

What is the cheapest Ontario to Chicago flight route?

How far in advance should I book a flight from Ontario to Chicago?

What cabin class options are available on Region of Ontario to Chicago flights?

Can stopping save me money on Region of Ontario to Chicago flights?

What is the cheapest airline that flies from Ontario to Chicago?

Which airlines fly to Chicago?

How many flights depart from Region of Ontario to Chicago on average per day?

How many flights depart from Region of Ontario to Chicago on average per week?

How long does it take to fly to Chicago?

Cheap Region of Ontario to Chicago flight deals and tips

Best price found

Fastest flight time

Direct flights

Airports in Chicago

Frequently asked questions about flying from Ontario to Chicago

Best airlines flying from Region of Ontario to Chicago

Compare and see reviews for airlines that fly from Region of Ontario to Chicago with momondo

Travelling to a place near Chicago?

Why use momondo?

An easier way to manage your Chicago trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Airports listed have a maximum distance of 25.6 km from Chicago

Fly your favourite airline to Chicago

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Chicago

List of cabin classes available on flights landing in Chicago. Availability may vary depending on flight origin and airline.

Popular Cities in the United States

Popular flights according to clicks in the last 7 days on momondo

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According to popular flight searches on momondo this year

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